Feed direction change assembly for sewing machine

ABSTRACT

The purpose of this invention is to change the direction of the feed so that the user/operator can now use the free arm of the sewing machine to the optimum advantage. Heretofore, the conventional domestic free arm sewing machine has been limited to sewing in a lateral direction across the free arm, the use of this invention allows the machine to be used so that tubular shaped garments can travel along and around the free arm of the sewing machine thus sewing can be accomplished with any out side seams, something heretofore impossible with a conventional free arm domestic sewing machine

DESCRIPTION OF INVENTION

The following description of the sewing machine are for purposes of example only modifications and alterations can be made to better allow for precision tolerances and efficiency of operation. The descriptions and any measurements in this example are approximate and for a domestic free arm sewing machine. The descriptions referenced by part numbers. 1. the raceway (5) is mounted to the bottom of the inside of the free arm then the slide pin (7) is inserted in to the race way slot along with the cable (9) which is fastened to the slide pin (7) then the feed dog hole is put over the slide pin (7) then the lock washer (8) is in the slot on the slide pin (7) then the rocking race way is fastened to the prior art, with the push rod (as shown on drawing page 1 of 5).

HOW THIS INVENTION WORKS

Know the prior art as a back and forth action which makes the raceway rock back an forth so when the feed dogs are in the back and forth sewing position that's the way the sewing machine normally runs, so when the cable is pulled that makes the slide pin move along the raceway this then changes the direction of the feed an the feed dogs an the feed plate so now the feed dogs an feed plate are sewing in the sideways mode which (as in drawing on page 1 of 5) means the feed dogs are now sewing along the free arm hence the feed directional change of the sewing machine (left and right)

The free arm sewing machine can now be used to optimum advantage. Tubular shaped garments can now be sewn using an out side seam. No longer is the user/operator limited to sewing in the conventional manner. Pockets can be sewn on the outside of pants legs, something that cannot be done on a conventional machine stripes can know be sewn along pants legs of say a tuxedos, and other types of pants, or any other customized stitching along the length of the pants legs or sleeves, and dresses, and leggings, etc because outside seams can now be sewn with a lock stitch.

Accordingly I claim the following as my objects and advantages, to provide a modification for the free arm sewing machine which allows for new sewing applications and uses. Tubular shaped garments can now be sewn with two outside seams with a conventional lock stitch which is superior to the chain stitch which is normally used; a lock stitch creates a better and stronger seam. This invention allows for the full use of the free arm, as tubular shaped garments can be placed over and along the length of the free arm as the free arm passes through the center of the garment. Another advantage is that the user does not have to purchase any alternate sewing devices this invention allows for the full use of the free arm hence a fuller use of the sewing machine and is self contained in the sewing machine.

DRAWINGS AND FIGURES

FIG. 1 shows the race as connected to the bed of the free arm of the sewing machine with the push rod connected to the prior art, and the slide pin (with the cable) inserted into the raceway with the feed dog in the longitudinal position (to sew side ways or to the left or right) along the free arm instead of across the free arm.

FIG. 2 shows the race from the top view, the feed dog from the top and from the side. The slid pin from the side view and the feed plate from the side view and the top view and the feed dog guides 1 and 2 which also holds down the feed plate

FIG. 3 shows how the different parts go together and were the feed plate retainers are located on the feed plate

FIG. 4 shows how the feed dogs align with the feed plate. And shows a larger picture of the raceway as in FIG. 3

FIG. 5 shows the feed plate, upside down showing the feed plate retainers and feed plate guides (thy do both jobs) and the inside back of the sewing machine with rotating cable knob assembly.

CONCLUSION AND SCOPE OF INVENTION

While the description contains many specificities, the reader should not construe these as limitations on the scope of the invention but merely as exemplifications of the preferred embodiments thereof. Others skilled in the art will surely envision many other possible variations and applications, this same type of configuration may also be used on conveyor systems to change their directions, or on any other types of machines which are similarly designed, where it would be desirable to have the option to change the direction of the feed. The use of this invention may be applicable to industrial and commercial machines, with a wide range of uses the commercial ramifications of this invention can be directly beneficial to the cottage industry, since the sewing machine will have a wider a range of applications. 

1. a feed direction change assembly for the sewing machine, comprising a. a rocking raceway with a slide pin & cable an a rotating feed plate
 2. A process for sewing tubular shaped objects, comprising the steps of: a. Positions the garment to be sewn, so that the two edges of said object passes over and around the free arm of the sewing machine, using an outside stitch to sew the garment or object into tubular form.
 3. A new use for the free arm of the domestic sewing machine, which allows the arm to be used to pass material over and around it to sew tubular objects. 